Lawn trimmer



A. FELTON LAWN TRIMMER A Filed Aug. 19, '1925 2 Sheets-Sheet l Dec. 6,1927. 1,651,759 vA. FELToN LAWN TRIMMER Filed Aug. 19, ,1925 2sheets-shewv 2 rill:

Parenteel se. e, i927,

Anriian'rnximon; oniiv'nivvriiijaen,A N'Evf Yonai Applicaties-mea' Augs*'192 1925. "serial" ivo. snoei 'y i This lnvention'relates" to lawn edgetrim= vegetation along ftheed'geso a path; drive or' garden; l

One of" thel objects' tot" this invention is fto'v provide anecientl-machine ot thefabove' stat'edclass y'which'willoperatesatisfactorilyi overy uneven' ground. f

Af farther Objea for tnefinvefiaen este' provide a machine Which may beadjusted to operate'lalo'nglawn edges', theeleva'ti'ons of which differby several inches or'more vfrom the elevation of the `Walk or driveway.

Another aim' `of the inventionisto provide a machineiothetype indicated'Which'is easy* to propel and lwhich does"V not become cloggedfduring"its` operation.v v Further objects of the inventionfcomprise theprvision of a trimmer ormovv'e'r of this clas'sl'wh'ichfls 4'not onlysimple m'construcf tionfbnt iswalso durableand -dependablev'inoperation. Still Jfurther and more specific objectsgifeatur'es andadvantages Will more clearly appear romthe following detaileddescription taken in connection with the accompai'iyingl draivlngs 1n"3which' Fignl -is a side' elevational View of a lawn edge 'trimmer'embodying? mv improvements inajpre'ie'rred'- ormther'eof,"

Fig-2 is a 'plan viev'vioi the machineiof nel; Y

Fig, '3 -is a section of the' same taken onV theline '3-3 of Fig. 2,

Figli" a is a section taken substantially up'onfv-the line oiFig 3,

Fig.l 5 is a' detail perspective viewshovv-r ing one of the cuttingblades;` and A y Fig; 6 Ais a side elevational view' of a imodiie'd*form o'f machine embodyingjmyv im# provements; i f

Referring to thedrawings,v 10 represents a supportingI frame comprisinga centrall sup-v porting bar ll to Whichthe various'portions of l'themachine 'are attached.' Each' side of the supporting trame is carriedupon trucks 12 and 13 respectively, each of which trucks have a pair ofn'flieels'asatlt arranged in alignment along the lawn edge and rmountedvupon truck bars as at 15.f which-may be pivotallv connected -as at'16to'adjiistable andl substantially vertically extending attaching-barsl?. rvlhe bars 17 may be slotted asV atxlS for receiving a. bolt and'nut at 19 oradjustably fixing# the .bars upon side These'- edgespressing against the* grass `andlearth'serve to clearly.'( le'llinethe"trinnned v I inclined 'direction alohg'f'a handle member V 29` whichcauses' vthe movable blade 3D" 'to rotate infa vertical; planealongthezla'vvnf* frame members scandal respectiveiy,fwnihf 1n turn arefixed :to the centralI 'ramefimenf- Ast'ationaryC m'e'm'berf22`yeitending ve'rtically'a' substantial distance be iXol't'r supportingmembers 23 and 24" dependi i frame member llLtoprv'i e stationary bia A'parts, i An' inclined" iiige'f Qf'eten'ds iort'v'ard tromthe" loweryedge" of* thefmeinber" 22 for raisingthe grass'agaii the forward edge26 ofthe stationfary'memj: ber: The lo'iver'edges Vofthe `bladfe"2'27andiinger 25' vare in horizontal alignment= and` extend V"substantiallyparallel to' the' ground and ithe lawnI` edge Whichisto be trimmedl` 36rupon which areV mounted"suitable` colv operating fgear's at'87 andanfoperatin'g'crank The operator may propel theS devicegbyeo meansof fvthe 'handle member 36 iand at lthe same time by turning the crank3`8,-th e"ish`aift Slisrotated'and impartsa rotational movementtothe'gear's'32and 83 and to'the shaft edge As the machineproceeds;the'tingenA 25 entends beneathv the overhanging grassvrr fatthel'aivnedge and raises such grass into. i

Contact 'with lthey stationary blade parts 10o 'ivhere it isperiodicallyVcnt oit" the" rotating' blade. As "appears infFig. '5, the rotatI ingblade 30, may'-"be`- kprovided With. a bevelled rear edge'as'" at39`which' lnot only strengthens theblade, but alsofservesfto* throw/kasidethe cut 'grass orj'other material`y l f.

'wien esta@ mariawww@iwfdt thevfallrpr driveway 'sideof v"the machmekf nAs-indicated in Fig. 3, the handle member 36 may be securely fixed tothe central supporting frame ll by means of attaching plates 40 and 4l.j

From the ldescription it will be seen that a lawn edge trimmer isprovided having a supporting frame mounted upon wheels providing a wheelbase of substantial area. Furthermore, the trucks at each side of theframe may be independently adjusted in order to provide for differencesin elevation ofthe lawn side and the walk ordrive sidel of the lawnedge, as appears in Fig. 4. Also each of the trucks being pivotallymounted at.- the pivoting point 16 are free to independently follow anyground inclinations that are encountered, and since the supporting framehas 1awheel base of substantial length and width-any depression lorelevation which affects one of the wheels will have very little effectupon `the elevation of the cutting blades.

In the modified form of machine, as illustrated Fig. 6, anoperatingshaft54V extends upwardly along a handle 36 fora shortdistance andisprovided with a pair of cooperating gears 42 and 43. VThe gear 43 isprovided with a sprocket 44 for receiving an endless chain 45 runningover a larger iprocket 46 at the upper end of thehandle member 36. `Thesprocket 46 may be `pro-y vided with an operating crank 47. A

' sprocket and chain arrangement of this type provides a smooth running,positive drive, and a gear ratio which may be varied within wide limitsby proper design of the sprockets. f

While I have described my improvements in detail with respect to twoembodiments thereof, I do notv desire to be limited to such forms sincemany changes and modifications may. be made without departing from thespirit and` scope of the invention in its broader aspects. I thereforedesire to cover all forms andV 'changes coming within theV scope of anyone or more of the appended claims.V

What I claim as new and desire to secure by .Letters Patent, is:

l. A trimming device 'of the type de? scribed comprising a supportingframe mounted upon wheels, a substantially verti- .cal `stationary bladedepending'from the frame, and arotary cutting blade cooperatmg with saidstationary blade and being provided with a bevelled rear edge forstrengthening the blade and also for throw-4 ing Athe cut grass from thelawn, and an operatinghandle provided with means for rotating themovable blade. i

2'. A lawn edge trimmer comprising a supporting frame each side of whichis carried upon a truck having a plurality ofwheels 1n alignment along.the lawn .edge and providinga wheel basev of substantial area, at-

taching means between the truc-ks and the frame permitting independentVelevational adjustments of each side of the frame and having pivotalconnections permitting lthe nations, cooperating cutting blades mountedupon said frame. and an operating handle provided with means foroperating one of said blades.

4. A lawn edge trimmer comprising a supporting frame carried uponV trucks,a substantially vertical stationary blade depending from the framecentrally thereof, an inclined :finger extending forward from thev loweredge of said blade for raising the grass, a single movable bladecooperating with said stationary bladeand linger and mounted forrotation in a vertical plane along the lawn edge, andan operating handleprovided. with means for rotating the movableblade.

A lawn trimmer comprising ,a supporting frame each side of which iscarried upon .a truck having a plurality f of wheels in alignmentin thedirection of movement of the trimmer and providing a wheelbase ofsubstantial area, attaching means between the trucks and the framepermitting independent elevational adjustments of each side of the frameand having pivotal connectionsV permitting the trucks to independentlyfollow ground inclinations, a stationary blade Amounted on the frame, amovableblade cooperating with said stationary blade, and an operatinghandle provided with means for operating the movableblade. Y

6. A lawn et ge trimmer comprising a supporting .frame carrying alrotatable Acutting' blade provided with a bevelled rear edge forstrengthening the blade and alsofor throw-v ing the cut grass from thelawn, and means for rotating the blade. j

Y 7. A lawn ledge trimmer comprising a supporting frame a substantiallyvertical stationary blade depending from' the frame centrally thereof,an inclined finger extending forward from the lower edge of said bladefor raising the grass, a single movable cut- K'ting blade coperatingwith said stationary blade and linger and mounted for rotation in avertical plane along' the lawn edge, said movable blade being providedwith a bevelledl rear edge for strengthening the blade and also torthrowing the cut grass `from the lawn, and means blade.

8. A lawn Vedge trimmer comprising a for rotating the movable supportingframe, a substantially vertical stationary bladedepending from the tramecentrally thereof, an inclined i'inger extend-- ing forward 'from thelower edgevot said blade for raising the grass, a single movable bladecooperating with said stationary blade and linger and mounted forrotation in aI vertical plane along the lawn edge, and means torrotating the movable blade.

9. A lawn edge trimmer comprising a sup-` porting trame each side ofwhich is carried upon a truck having a plurality of wheels` in alignmentalong the lawn edgeand providing a wheel base of substantial area,attaching means between the trucks and the trame permitting independentelevational adjustments of each side of the trame and having vpivotalconnections permitting the trucks to independently follow ground in-vclinations, a substantially vertical stationary blade depending from thevtrame eentrally thereof, an inclined finger extending forward from thelower edge ot said blade.

'for raising the grass, and a single movable blade cooperating with saidstationary blade and linger and mounted yifor rotation in a verticalplane along the lawn edge.

10. A lawn edge trimmer comprising a supporting trame each side of whichis carried upon a truck having a plurality oiY wheels in alignment alongthe'lawn edge and providing a wheel base of substantial area, attachingmeans between the trucks and the trame permitting independentelevational adjustments oi each side ot the traine and having pivotalconnections permitting the truclrslto independently follow groundincli'nations, a substantially vertical stationary blade depending fromthe tramefcentrally. tliereoi, an inclined finger extending foi# wardt'romthe lower edge olV said blade for raising the grass, a singlemovable blade co-l operating with said stationary blade and finger, andan operating handle provided with means for operating the movable blade.

ll. A lawn edge trimmer comprising a supporting trame each side ot whichis cai'- riedV uponl a truck having` a plurality of ,forward from lthelower edge of said blade toi' raising the glass, a movable bladecooperating with said stationary blade and ling forward from the loweredge of saidl follow ground inclinations.

linger and mounted for rotation in a vertical plane along the lawnedge,and means for rotating the lmovable blade.`

l2. ln a device ot the type described, a

substantially vertical stationary blade de' pending trom a supportingframe, and amovable cutting blade cooperating with said stationary bladeand mounted for rotation in a vertical plane, said blade being providedwith a bevelled rear edge for strengthening.

the blade and `also for throwing aside the cut material.

13. A lawn trimmer comprising a sup porting frame each sideof which` iscarriedv upon a truck having a plurality, ot wheels in alignment alongthe lawn edge and providing a wheel base of substantial area, attac-hingmeans between the trucks and the iframe permitting independentelevational adjustments ofeach side ot the'frame and j having pivotalconnections permitting the trucksv to independently Jfollow groundin-Vclinations and cutting blades y'mounted upon said trame.

lil. A trimmer comprising a supporting traine each side otwhich iscarried upon a truck having a plurality o-wheels in alignment along thedirection of travel of the trimmer, and providing a wheel base ofsubstantial area, attaching means between the trucks and the tramepermitting independent elevational adjustments of eachside ofI thetraine, a stationary lblade depending from the frame, an inclined fingerextende blade for raising the material tobe cut, a movable bladecooperating with said stationary blade and finger and-mounted forrotation in a vertical plane, said blade being` provided with a bevelledrear strengthening edge tor also throwino' aside the cut mate-l liandleprovided with rial, and an operating means lorrotating the' movableblade.

l5'. A movable glass cutting blade cooperating with a stationary bladeand `mounted Vliol for rotation in a vertical plane along a lawn i edge,said movable cutting bladev being prov videdwith al bevelle'drear edgefor strength-` ening the blade and also for throwing the cut grass fromthe lawn, and an operating handle provided with means for rotating themovable blade. Y

16. A lawn edge trimmer comprising a cutting blade rotatable in a.plane'parallel to the lawn edge, a supporting trame vtherefor, andtrucks for .said frame at Veachkside ot said bladesaid trucks beingpivotally connected tothe traine ter turningmovement within planesparallel to the lawn edge Y thus permitting each truck to independentlyln testimony whereof l u `ave signed my name to this speciiication. v

ian

Armani) FELT'ON'.

